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Use common RPC data preparation for L2 and EF trigger algorithms in MT setup (ATR-18497)

The MT setup for the trigger now runs the offline RPC data preparation in the L2 step and then re-uses the decoded data in the EF step, avoiding the need to decode the data twice. Changes made:

  • Added a DoDecoding flag to RpcDataPreparator in TrigL2MuonSA. This defaults to true (to not break legacy running). When false, the data decoding tools are not called.
  • MuonSetup.py is adjusted to run the offline RPC data preparation algorithms in the l2 step and to re-use the decoded collections in the EF step.

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